+ By Hark Liou

蚊香王子是利用喇叭發出大約介於16000Hz~21000Hz之間高頻的聲音來驅趕蚊蟲，長時間開著可以達到驅趕的效果。Mosquito coils Prince horn about the range 16000Hz ~ 21000Hz between high-frequency sound to repel mosquitoes, for a long time to open the effect can be achieved expelled.